user
You need to complete the following task:

Explain how roller coasters work.


assistant
Roller coasters are amusement park rides consisting of a track with various changes in elevation and speed. They are typically driven by a chain lift hill connected to the engine, which draws the roller coaster cars up to the top of the track. Once reaching the top, the cars roll down a hill and move through a series of curves and drops, providing riders with a thrilling experience.